Usual quality (8)
I believe the answer is:
standard
I believe this clue is a double definition.
'usual' is the first definition.
('standard' can be a synonym of 'usual')
'quality' is the second definition.
(standard is a kind of quality)
(Other definitions for standard that I've seen before include "Established model - flag" , "Stock - basic - flag" , "Typical, normal" , "Average sort of flag" , "Flag - pattern - guide" .)